Run create_empty_files when blank eMMC partition is detected

msm-cros-efs-loader.sh

@@ -75,7 +75,8 @@ reload_fsg() {
 	# If the header area is just blank, save an extra read and just bail now.
 	elif [ -z "${fsg_header}" ]; then
 		echo "INFO: Blank eMMC boot partition."
-		return 1
+		create_empty_files
+		return 0
 	else
 		# Ordinarily this would be the place to error out. For this next
 		# build, also check for an "old-style" FSG.